2 Vocabulary Chemical Energy Current Electrical Energy Energy Kinetic EnergyMechanical EnergyPotential EnergyVoltage
3 What is ENERGY???Work is when an applied force cause a change in motion, heat, or light in another objectA Bicyclist pedals of his bike and the bike movesA magnet pulls a piece of medal towards itselfA log burnsI added periods.
4 What is ENERGY??? Energy is the ability to do work The bicyclist has energy which he uses to propel his bikeThe magnet and piece of metal, when held at a distance, the magnet has energy to move the metalThe log has energy so that when burned it will emit heat and lightI added periods.44
5 What is ENERGY??? There are two different forms of energy Kinetic EnergyPotential EnergyThere are many different typesMechanicalChemicalElectricalEtc.I added periods.55
6 Potential vs. Kinetic Energy The energy stored in an object is called potential energy.The energy of motion is called kinetic energy.Both kinetic and potential energy are caused by a force.Periods, kinetic and potential not capitalized
7 Transformation From Potential to Kinetic Potential energy can be transformed into kinetic energy.This is done by allowing an object or particle to move in the direction of a force. This will decrease the potential energy and increase the kinetic energy.Examples of this can be found in different forms of energy,Mechanical energyChemical energyElectrical energyI added “in different forms of energy”
8 Mechanical EnergyMechanical energy is based on the position and movement of an objectMechanical energy can be created by different forces: gravity, pressure, humans, etc.
9 Mechanical Potential Energy A ball being held has potential energy.The amount of energy is related to the height at which it is being held.The potential energy comes from gravity pulling on the ball.
10 Mechanical Kinetic Energy Potential => Kinetic:When the ball is released it will begin to fall.This will decrease its distance from an origin point such as the ground, therefore decreasing its potential energy.The ball will move towards the ground at an increasing speed, therefore increasing kinetic energy.Observation: The higher the ball Is held, the greater the potential energy.
11 Chemical Energy Chemical energy is based on the bonds between atoms. Chemical energy is released when a chemical reaction occurs; such as burning or mixing chemicals.
12 Chemical Potential Energy A molecule (group of atoms bound together), such as methane, has potential energy.The bonds between the atoms store the potential energy.
13 Chemical Kinetic Energy Potential => Kinetic:When the methane is ignited, the bonds of the atoms break.This releases kinetic energy such as heat and light.Observation: In this transformation, new bonds are created between the atoms. Therefore, potential energy still exists, just in new molecules.
14 Electrical EnergyElectrical energy is based on the position and movement of electrons.Moving electrons is known as current. This is related to kinetic energy.The strength of forces acting on stationary electrons is known as voltage. This is related to potential energy.I added, this is related to kinetic energy, and this is related to potential energy. This is kinetic and this is potential sounded as if something was missing.
15 Electrical Energy Electrons repel each other A buildup of electrons in one place will create a force that pushes the electrons awayThis force causes a voltage or potential energyIf the electrons are able to move, the potential energy will cause a current or kinetic energy in the electronsI added, this is related to kinetic energy, and this is related to potential energy. This is kinetic and this is potential sounded as if something was missing.1515
16 Magnetic EnergyMagnetic energy is based on the attraction, or repulsion, of two magnetsOra magnet and a magnetically susceptible objectIron, etc.
17 Magnetic Energy Remember the suspended ball and gravity In magnetism, potential energy can be created by suspending objects pulled on or pushed by a magnetWhen allowed to move freely, the potential energy will transform into kinetic energy1717
18 Electrical and Magnetic Relations Magnetic energy can be transformed into electrical energy
19 Electrical and Magnetic Relations Potential:When a magnet is moved near an open strand of wire, potential energy is created on one end of the wire.Movement of electrons towards one end of the wire creates an electrical force.This force is the source of the potential energy.Voltage (Volts)
20 Electrical/Magnetic Kinetic Energy Potential => Kinetic:When the two ends of the wire are connected, the negative particles are able to move towards the other end.The movement of these particles is kinetic energy.Current (Amps)Electron FlowI added THE in two ends of THE wireAlso I wrote wire’s ends
22 What Did We See?List the various kinds of energy that were seen in the experiment and where they were seen.Can this form of energy be used on a large scale? Could it power more then a light bulb?the image included looks really bad
23 How do We Get Electricity at Home? Steam power – about 90%Wind power – about 10%Hydroelectric power – less than 1%Hydroelectric is one word, power not capitalizedLess THAN